Dog Training Supply

I have a neighbor who has a dog that keeps getting off his leash and going into other neighbor’s yard. I live on a busy street and today he nearly got killed by walking out in the middle of traffic. The neighbor will not answer the door and I feel the dog is being neglected. I feel bad for the dog; however, other neighbors have made similar complaint to animal control. Today I called Animal control and they claimed they were so backed up (a day behind) and over 6 hours ago, the complaint was made. And still the dog is off the leash, now sleeping in the back yard. He’s a wierd dog, sometimes he’s nice, but often times he barks and snapps, sometimes threatening people passing by on the sidewalk and the dogs they are walking on their leash. The neighbor will not talk to me about it. She feels it’s not my buisness, but I consider it a threat. But still, animal control just won’t do anything. I don’t even feel safe in my own yard. Any advice other than moving.